Dispensing faucet



Patented Aug. 18, 1931 sur 'rar erica ATENE* EnnmpJ-vumm nrsrnNsINGrnuonr Application filed August 23, 1921. Serial No. 494,698.

rlhis invention relates to liquid dispensing faucets.

The dispensing faucet to which the invention applies in particular has acasing for connection to source of fluid under pressure, an inletthereto and an outlet therefrom, valves controlling the inlet and theoutlet, and a plunger reciprocable in the casing to eject a limitedquantity of fluid during each reciprocation.

An obj ect of the invention is to provide an ctiicient and durabledispensingfaucet.

Another object is to provide a faucet from which Working parts may beremoved and replaced Without disconnecting' the faucet from its sourceof liquid. v Y

Another object is to provide a faucet which will not leak.

Another object is to provide a faucet which may be readily assembled andinstalled.

Another object is to provide a faucet which may be readily andeconomically manufactured.

Another object is to provide afaucet in which the inlet valves are openduring the major portion of the movement of the piston to enable auniform charge of liquid to enter the receivingA chamber during eachoperation of the faucet.

Other objects and advantages will appear hereinafter.

The invention is exemplified by the faucet illustrated in theaccompanying' drawing.

The faucet is shown in central longitudinal section and has a casing 1which is connected by a supply pipe 2 to a tank 3 containing a supply ofliquid, such as soap;

The liquid is delivered to the faucet under pressure, as by arrangingthe tank 3 above the faucet. l

rIhe casing 1 contains a receiving or supply chamber 1 and has an inlet5 thereto arranged' in the rear end thereof and an outlet 6 arranged inits lower Wall.

The inlet 5 provides communication betweenthe receiving chamber 4 and arecess 7 which is formed in the` rear end of the casing 1 and'internallythreaded for attaching the faucet tothe threaded open end of the supplypipe 2.

The liquid admitted to the receiving chainber l, through the inlet 5, iscontrolled by two valves 8 and 9 Working in a tubular inlet valvehousing 1() threaded into the dispenser-casing.

Y v 0 The tubular inlet housing 10 has a restricted opening 11 at itsouter end, through which extends the stem 12 the valve 8.

The valve 8 may take theA form of a flat, disk which seats in the outerend of the inlet casing 10, and'ivhen so seated closes therestrictedopening 11 therein, thus checking the iioiv of liquid soap from the soapchamber back into the supply pipe.

The extent of movementy of the valve 8 is limited by a stop 13 on theopposite end of the valve. stem 12.' rIlle 'stop 13 may be formed byflattening the end of the valve stem 12 after the, same has been passedthrough the restricted opening.

The valve 9 Working in the inlet valve housing 10 may take the. form ofa ball which, under pressure of the liquid, is adapted to seat directlyagainst the restricted inlet openf ing 5 and close the same.

` Thus when the valve 9 seats to' close the. inlet 5, the iiow of liquidsoap from thel supply pipe into the soap chamber 4 is stopped.

T he outlet opening 6 is adapted to be closed byy a ball check valve 14sea-ted therein, under pressure of a coil. spring 15.

The outlet ball check-valve 141 andthe coil spring 15 are containedWithin a tubular outlet valve housing 1G, threaded into an open- A, .V

ing in the side ofthe dispenser 1.

The outlet valve housing 16, at its outer end has a restricted opening17, through which the liquid is delivered from the faucet.

The annular shoulder immediately sur-...

rounding the restricted opening 17 serves a a seat for the spring 15.

The pressure of the coil spring 15, when in extended position, shouldexceed the pressure of the liquid soap admitted from the supply pipe tothe liquid receiving chamber 4: so as to prevent opening of the outletcheck valve While the chamber is receiving a charge of liquid soap. i

A piston 18 Working in the receiving chamber 4 is normally heldat theouter end thereof' l by the coil spring 19. By pushing on the knob orpush button 2O at the outer end of the piston rod 18', the piston 18 maybe moved inwardly against the action of spring 19. Then pressure on theknob 20 is relieved, the tension of spring 19 returns the piston 18 toits normal position.

The piston rod 18 passes through an opening 21 in a knurled cap 22threaded onto the outer end of the faucet casing.

This cap 22 contains graphite packing 23, or other suitable packing,which prev-ents the leakage of the liquid soap at the outer end of thechamber 4.

A lock nut 24 serves to lock the cap 22 in adjusted position on thefaucet casing.

A small rod 25 fastened in the inn-er end of the piston 18 movestherewith and controls the position of the inlet ball valve 9.

lllhen the faucet is connected with a supply pipe and the chamber4lislled with liq-V uid, the inlet valve 8 is open, the inlet valve 9 isheld closed by the pressure of the liquid in the pipe 2 and the tank 8,and the outlet valve 111 is held closed by its spring 15.

inward movement of the piston 18 places the liquid in the chamber aunder pressure and, when this pressure becomes vgreater th an thepressure exerted upon the valve 9 by the liquid in the pipe 2 and tank8, valve 9 will be opened and the valve 8 closed thereby.

Continued inward movement of the piston 18 increases the pressure uponthe liquid in the chamber fias the valve 8 prevents the same from beingforced into t ie supply pipe.

This pressure causes the outlet valve 14 to open and liquid to beejected forcibly through the outlet 6 and opening 17.y

Then the piston is released, the spring 19 urges the same outwardly, thespring 15 urges the valve 14 to its seat and closes the outlet, thepressure of the liquid in the pipe 2 opens the valve 8, and the rod 25holds the alve 9 open to allow liquid to iiow through the inlet 5 andrefill the chamber Ll.

As the piston moves outwardly, the pressure of the liquid in the valvehousing 10 holds the valve 9 against the end of the rod 25 until thepiston approaches the limit of its outward movement when the rod 25disengages the valve 9 which closes the inlet 5 and relieves the chamberlfrom the pressure of the liquid in the pipe 2 and tank 3.

The outlet valve assembly and the piston assembly may be removed whilethe faucet is in service as the valve 9 prevents discharge of the liquidfrom the pipe 2.

In assembling the faucet, the inlet valve housing 10 and t-he inletvalves 8 and 9 may be assembledas one unit, the outlet valve housing 16,valve 1li and spring 15 assembled as another unit, and the piston 18,knob 20 and cap 22 assembled as a third unit Vand The invention herein.set forth is susceptible of various modifications without departingfrom the scope thereof as hereafter claimed.

The invention is hereby claimed as follows 1. A liquid dispensing faucetto which liquid under pressure is supplied, comprising a casing having aliquid receiving chamber therein, an inlet and an outlet for thereceiving chamber, an inlet check valve adapted when seated to preventdischarge of liquid from the receiving chamber through the inlet, asecond inlet valve adapted under pressure of the liquid supplied to thefaucet to close the inlet, an outlet check valve and a piston within thereceiving chamber controlling the opening and closing of said valves, acharge of liquid beingadmitted through the inlet to the receivingchamber by the outward movement of the piston and dischar, ,'edl

casing having a liquid receiving chamber therein, an inlet and an outletfor the receiving chamber, a piston working in the chamber toalternately draw a charge of liquid therein through the inlet anddischarge the same therefrom through the outlet, an inlet check valve,and an inlet stop charge valve, the inward movement of the pist-oncausing the opening of the stop charge valve and then the closing of thecheck valve and the outward movement thereof allowing .the pressure ofthe liquid to open the check valve and then to close the stop chargevalve.

3. A liquid dispensing faucet to which liquid under pressure issupplied, comprising a casing having a liquid receiving chambei'therein, inlet check and stop charge valves controlling the admission ofliquid to the chamber, an outlet through which liquid is discharged fromthe chamber, and a piston working in the chamber and so controlling theoperation of the valves that by its movement in one direction the checkvalve is opened and then the stop charge valve is closed, and by itsmovement in the opposite direction the stop charge valve is opened andthen the check valve is closed.

4. A liquid dispensing faucet comprising a casing having a liquidreceiving chamber and an inlet thereto and an outlet therefrom, a pistonfor controlling the admission of liquid to the chamber and its dischargetherefrom, opposed inlet check valves, and a removable auxiliary casingfor the inlet check valves secured to the main casing.

5. A liquid dispensing faucet comprising a casing having a liquidreceiving chamber and an inlet thereto and an outlet therefrom, a pistonfor controlling the admission of liquid to the chamber and itsdischargetherefrom, a removable auxiliary casing provided with arestricted opening and secured to the main casing, a check valve Withinthe auxiliary casing adapted to seat and close the restricted openingupon movement of the piston in one direction, and a second check valveWorking in the auxiliary casing adapted to close the inlet underpressure of liquid supplied to the faucet When the piston reaches apredetermined point in its movement in the opposite direction.

6. In a liquid dispensing faucet, a casing having a liquid receivingchamber, an auX- iliary casing secured thereto Which contains oppositelyseating inlet check valves, and an outlet check valve for said chamber.

7. In a. liquid dispensing faucet provid-ed with a casing having aliquid receiving` chamber therein. an inl-et check valve, a stop chargevalve for closing the inlet to prevent the passage of liquidtherethrough into the receiving chamber, and a removable auxiliarycasing for containing the tvvo valves and secured to the main casing.

8. A liquid dispensing faucet to which liquid under pressure issupplied, comprising a casing having a liquid receiving chamber thereinand an inlet and outlet for the chamber, an inlet check valve, a `stopcharge valve, an outlet check valve, a piston for controlling theadmission of liquid to the receiving chamber and its dischargetherefrom, the inward movement of the piston creating a pressure in thechamber which first opens the stop charge valve. then closes the inletcheck valve and finally opens the outlet check valve, and means movingWith the piston engaging the stop charge valve whereby during theoutward movement of the piston the means holds the stop charge valveopen until the piston reaches a prefletermined point in its movement.

9. A liquid dispensing faucet to which liquid under pressure issupplied, comprising a liquid receiving chamber and an inlet and anoutlet therefor, an inlet check valve, a stop charge valve for theinlet, a piston controlling the admission of liquid to the receivingchamber and its discharge therefrom, the inward movement of the pistoncreating a pressure in the chamber Which first opens the stop chargevalve and then closes the inlet check valve, and a rod carried by thepiston and adapted to engage the stop charge valve whereby during theoutward movement of the piston the rod holds the stop charge valve openfor a predetermined movement of the piston.

10. A liquid dispensing faucet comprising a liquid receiving chamber,and removable inlet and outlet valve housings secured thereto. theoutlet valve housing forming a discharge nozzle.

11. A liquid dispensing faucet comprising a liquid receiving casing, apiston therein, an inlet check valve therefor, and means conalternatelyto control the iioW of fluid through said inlet, means for controllingsaid outlet, and a piston reciprocable in said chamber to eject fluidthrough said outlet under pressure as said piston moves inwardly andhaving means to hold one of said inlet valvesy against closing tothereby admit liquid to said receiving chamber only While the outlet isclosed.

14. A liquid dispensing faucet, comp-rising a casing having a receivingchamber and an inlet thereto and an outlet therefrom, a normally closedvalve controlling said outlet, two valves controlling said inlet andresponsive to liuid pressure at opposite ends of said inlet to hold oneof said valves open and the other closed, a piston movable into saidchamber to place the liquid therein under pressure and discharge thesame through said outlet, and a rod carried by said piston in a fixedposition to engage said inl-et valve and hold the sam-e open during themajor part of the' movement of said piston to admit liquid to saidchamber.

15. A liquid dispensing faucet, comprising a casing having a receivingchamber and an inlet thereto and an outlet therefrom, a normally closedvalve and a normally open valve controlling said inlet and responsive tofluid pressure,v a normally closed spring check valve controlling saidoutlet, and a plunger movable into Said chamber to forcibly eject liquidthrough said outlet valve and having a rod xed thereto to hold saidnormally closed inlet valve open during the major part of its returnstroke to thereby admit liquid to said chamber.

In Witness whereof, I have hereunto subscribed my name.

J. FREDERICK PALMER.

CERTIFICATE 0F CORRECTION.

Iatent No. 1,819,381. Granted August 18, 1931, to

JOHN FREDERICK PALMER.

it hereby certified that error appears in the printed specification ofthe above mmbered patent requiring correction as follows: Page 2, line57, strike est the article the"; lines 163 and 104, claim 3, strike out"to which liquid under pressure is supplied; page 3, line 22, Claim 7,strike out or"; and that the saiti Letters Patent should be read withthese eorrectioris therein that the same may conform to the record ofthe case in the Patent fice.

Signed and sealed this 22nd day of September, A. D. 1931.

M. .L Moore, (Seal.) Acting Commissioner of Patents.

